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Kai-Heng Feng bb264220d9 drm/amd/display: Restore backlight brightness after system resume
Laptops with AMD APU doesn't restore display backlight brightness after
system resume.

This issue started when DC was introduced.

Let's use BL_CORE_SUSPENDRESUME so the backlight core calls
update_status callback after system resume to restore the backlight
level.

Tested on Dell Inspiron 3180 (Stoney Ridge) and Dell Latitude 5495
(Raven Ridge).

Cc: <stable@vger.kernel.org>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-09-17 14:40:32 -05:00
arch
block
certs
crypto
Documentation drm-misc-next for 5.4: 2019-08-27 17:21:04 +10:00
drivers drm/amd/display: Restore backlight brightness after system resume 2019-09-17 14:40:32 -05:00
fs
include drm/shmem: Use mutex_trylock in drm_gem_shmem_purge 2019-08-28 10:02:39 -05:00
init
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MAINTAINERS drm-misc-next for 5.4: 2019-08-21 16:44:41 +10:00
Makefile
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.